N-(2-nitrophenyl)-2-aminopyrimidine derivatives, the preparation and use thereof

ABSTRACT

The invention discloses novel N-(2-nitrophenyl)-2-aminopyrimidine derivatives of the general formula I ##STR1## wherein R 1  and R 2  are each independently NO 2  or CF 3 , with the proviso that only R 1  or R 2  can be NO 2   
     R 3  is halogen, 
     R 4  is hydrogen or the --C(O)R&#39; group, in which R&#39; is C 1  -C 4  alkyl which is unsubstituted or substituted by halogen, C 1  -C 3  alkoxy or C 1  -C 3  alkylthio, 
     R 5 , R 6  and R 7  are each independently hydrogen, halogen, nitro, cyano, thiocyano, C 1  -C 12  alkyl, C 3  -C 8  cycloalkyl, C 1  -C 8  alkylthio, C 1  -C 6  alkylsulfonyl, C 1  -C 6  alkylsulfoxyl, C 3  -C 6  alkenyl, C 3  -C 6  haloalkenyl, C 3  -C 6  alkynyl, C 3  -C 6  haloalkynyl, C 3  -C 6  alkenyloxy, C 3  -C 6  -haloalkenyloxy, C 3  -C 6  alkenylthio, C 3  -C 6  alkynyloxy, C 3  -C 6  haloalkynyloxy, C 1  -C 8  alkyl which is substituted by halogen, cyano and/or C 1  -C 4  alkoxy, unsubstituted C 1  -C 8  alkoxy or halogen-substituted C 1  -C 8  alkoxy, the alkyl moiety of which may be interrupted by one or more single oxygen atoms; or are the Q--(E) n  --(X) m  -group, in which n is 0 or 1, m is 0 or 1, Q is phenyl which is unsubstituted or substituted by halogen, nitro, C 1  -C 3  alkyl, CF 3  and/or C 1  -C 3  alkoxy, or is a saturated or unsaturated heterocyclic radical containing one or more hetero atoms, E is a C 1  -C 3  alkylene bridge, and X is oxygen or sulfur. 
     Also disclosed are methods of preparing these compounds, and also agrochemical compositions which contain one such compound as active ingredient. The invention further relates to the use of the novel compounds, or, compositions containing them, in agriculture and related fields.

The present invention relates to the use of novel N-(2-nitrophenyl)-2-aminopyrimidine derivatives of the formula I below. The invention further relates to the preparation of these compounds and to agrochemical compositions which contain at least one of the novel compounds as active ingredient. The invention also relates to the preparation of such compositions and to the use of the novel compounds, or of said compositions, for controlling harmful micro-organisms, especially phytopathogenic fungi and bacteria.

Specifically, the present invention relates to compounds of the general formula I ##STR2## wherein R₁ and R₂ are each independently NO₂ or CF₃, with the proviso that only R₁ or R₂ can be NO₂

R₃ is halogen,

R₄ is hydrogen or the --C(O)R' group, in which R' is C₁ -C₄ alkyl which is unsubstituted or substituted by halogen, C₁ -C₃ alkoxy or C₁ -C₃ alkylthio,

R₅, R₆ and R₇ are independently hydrogen, halogen, nitro, cyano, thiocyano, C₁ -C₁₂ alkyl, C₃ -C₈ cycloalkyl, C₁ -C₈ alkylthio, C₁ -C₆ alkylsulfonyl, C₁ -C₆ alkylsulfoxyl, C₃ -C₆ alkenyl, C₃ -C₆ haloalkenyl, C₃ -C₆ alkynyl, C₃ -C₆ haloalkynyl, C₃ -C₆ alkenyloxy, C₃ -C₆ -haloalkenyloxy, C₃ -C₆ alkenylthio, C₃ -C₆ alkynyloxy, C₃ -C₆ haloalkynyloxy, C₁ -C₈ alkyl which is substituted by halogen, cyano and/or C₁ -C₄ alkoxy, unsubstituted C₁ -C₈ alkoxy or halogen-substituted C₁ -C₈ alkoxy, the alkyl moiety of which may be interrupted by one or more single oxygen atoms; or are the Q--(E)_(n) -- (X)_(m) --group, in which n is 0 or 1, m is 0 or 1, Q is phenyl which is unsubstituted or substituted by halogen, nitro, C₁ -C₃ alkyl, CF₃ and/or C₁ -C₃ alkoxy, or is a saturated or unsaturated heterocyclic radical containing one or more hetero atoms, E is a C₁ -C₃ alkylene bridge, and X is oxygen or sulfur.

Depending on the indicated number of carbon atoms, alkyl by itself or as moiety of another substituent such as alkoxy, haloalkyl, haloalkoxy etc., denotes for example the following straight chain or branched groups: methyl, ethyl, propyl, butyl pentyl, hexyl etc. and the isomers thereof, for example isopropyl, isobutyl, tert-butyl, isopentyl etc. Throughout this specification, a substituent prefixed by "halo" indicates that said substituent may be mono- or perhalogenated. Halogen and halo signify fluorine, chlorine, bromine or iodine. Hence haloalkyl is a mono- to perhalogenated alkyl radical, for example CHCl₂, CH₂ F, CCl₃ CH₂ Cl, CHF₂, CH₂ CH₂ Br, C₂ Cl₅, CH₂ Br, CHBrCl etc., and is preferably CF₃. Alkenyl is for example 1-propenyl, allyl, 1-butenyl, 2-butenyl or 3-butenyl, and chains containing several double bonds. Depending on the indicated number of carbon atoms, cycloalkyl is for example cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl etc. Alkynyl is for example 2-propynyl, propargyl, 1-butynyl, 2-butynyl etc., with propargyl being preferred.

Throughout this specification, a saturated or unsaturated heterocyclic radical containing one or more hetero atoms will be understood as meaning a saturated or unsaturated 5- or 6-membered heterocyclic ring system containing 1 to 3 identical or different heteratoms, e.g. oxygen, nitrogen or sulfur atoms. Typical representatives of such heterocyclic ring systems are: tetrahydrofuran, furan, tetrahydrothiophene, thiophene, pyrrolidine, pyrrole, pyrroline, pyrazole, imidazole, pyrazoline, oxazole, thiazole, isoxazole, isothiazole, pyran, dihydropyran, tetrahydropyran, thiopyran, dihydrothiopyran, tetrahydrothiopyran, pyridazine, dihydropyridazine, tetrahydropyridazine, pyrimidine, dihydropyrimidine, tetrahydropyrimidine, pyrazine, dihydropyrazine, tetrahydropyrazine, morpholine, thiazine, dihydrothiazine, piperazine and triazine. C₁ -C₃ Alkylene may be for example the following groups: --CH₂ --, --CH₂ CH₂ --,--CH₂ CH₂ CH₂ --, --CH(CH₃)--CH₂ --, --CH₂ CH(CH₃)--, --CH(C₂ C₅)--, --C(CH₃)₂ --.

The compounds of formula I are oils, resins or mainly crystalline solids which are stable under normal conditions and have extremely valuable microbicidal properties. They can be used for example in agriculture or related fields preventively and curatively for controlling phytopathogenic pests, e.g. fungi. The compounds of formula I have an excellent biocidal activity and a broad activity spectrum when applied in wide ranges of concentration and their use poses no problems.

The following groups of compounds are preferred on account of thier pronounced biocidal, especially fungicidal, properties:

Group Ia:

Compounds of the formula I, wherein R₁, R₂, R₃ and R₄ are as defined for formula I and R₅, R₆ and R₇ are each independently hydrogen, halogen, nitro, cyano, C₁ -C₆ alkyl, cyclopentyl, cyclohexyl, C₁ -C₃ alkylthio, C₁ -C₃ alkylsulfonyl, C₁ -C₃ alkylsulfoxyl, C₃ -C₄ alkenyl, propargyl, C₁ -C₃ alkyl which is substituted by halogen, cyano and/or C₁ -C₃ alkoxy, or are C₁ -C₆ alkoxy, the alkyl moiety of which is interrupted by 1 or 2 single oxygen atoms, or are the Q-(E)_(n) --(X)_(m) --group, in which n is 0 or 1, m is 0 or 1, Q is phenyl which is unsubstituted or substituted by halogen, nitro, methyl, CF₃ or methoxy, or is a pyridyl group, E is a methylene bridge, and X is oxygen or sulfur.

Group Ib:

Compounds of the formula I, wherein R₁, R₂ and R₃ are as defined for formula I, R₄ is hydrogen and R₅, R₆ and R₇ are each independently hydrogen, halogen, cyano, C₁ -C₆ alkyl, cyclopentyl, cyclohexyl, C₁ -C₃ alkylthio, C₁ -C₃ alkylsulfonyl, C₁ -C₃ alkylsulfoxyl, C₃ -C₄ alkenyl, propargyl, C₁ -C₃ alkyl which is substituted by halogen, cyano and/or C₁ -C₃ alkoxy the alkyl moiety of which is interrupted by 1 or 2 single oxygen atoms, or are the Q--(E)_(n) --(X)_(m) --group, in which n is 0 or 1, m is 0 or 1, Q is phenyl which is unsubstituted or substituted by halogen, nitro, methyl, CF₃ or methoxy, or is a pyridyl group, E is a methylene bridge, and X is oxygen or sulfur.

Group Ic:

Compounds of th formula I, wherein R₁ is NO₂ or CF₃, R₂ is NO₂ or CF₃, with the proviso that only R₁ or R₂ may be NO₂, R₃ is chorine, R₄ is hydrogen, R₆ is hydrogen, and R₅ and R₇ are each independently hydrogen, fluorine, chlorine, bromine, C₁ -C₃ alkyl, C₁ -C₃ haloalkyl, C₁ -C₃ alkoxy, C₁ -C₃ haloalkoxy, phenoxy or halogen-substituted phenoxy, OCH₂ OCH₃, OC₂ H₄ OCH₃, OCH₂ OC₂ H₅, OC₂ H₄ OC₂ H₅, OC₂ H₄ OC₂ H₄ OC₂ H₅ or --S--(2-pyridyl).

Group Id:

Compounds of the formula I, wherein R₁ is NO₂ or CF₃, R₂ is NO₂ or CF₃, with the proviso that only R₁ or R₂ may be NO₂ ; R₃ is halogen, R₄ is hydrogen or the --C(O)R' group, in which R' is C₁ -C₄ alkyl which is unsubstituted or substituted by halogen, C₁ -₃ alkoxy or C₁ -C₃ alkylthio; R₅, R₆ and R₇ are each independently hydrogen, halogen, nitro, cyano, thiocyano, C₁ -C₁₂ alkyl, C₃ -C₈ cycloalkyl, C₁ -C₈ alkylthio, C₁ -C₆ alkylsulfonyl, C₃ -C₆ alkenyl, C₃ -C₆ haloalkenyl, C₃ -C₆ alkynyl, C₃ -C₆ haloalkynyl, C₁ -C₈ alkyl whioch is substituted by halogen, cyano and/or C₁ -C₄ -alkoxy, unsubstituted C₁ -C₈ alkoxy or halogen-substituted C₁ -C₈ alkoxy, the alkyl moiety of which may be interrupted by one or more single oxygen atoms; or are the Q--(E)_(n) --(X)_(m) --group, in which n is 0 or 1, m is 0 or 1, Q is phenyl which is unsubstituted or substituted by halogen, nitro, C₁ -C₃ alkyl, CF₃ and/or C₁ -C₃ alkoxy, or is a saturated or unsaturated heterocyclic radical containing one or more hetero atoms, E is a C₁ -C₃ alkylene bridge, and X is oxygen or sulfur.

Examples of particularly preferred individual compounds are:

N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4,6-dichloropyrimidine (compound 1.1),

N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4-chloro-6-trichloromethylpyrimidine (1.11),

N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4,6-dimethylpyrimidine (1.15),

N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4-trichloromethyl-6-(methoxyethoxy)pyrimidine (1.6),

N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4-methoxy-6-(2-pyridylthio)pyrimidine (1.2),

N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4- trichloromethyl-6-(ethoxyethoxyethoxy)pyrimidine (1.4),

N-(3-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4-methoxy-6-(4"-chlorophenoxy)pyrimidine (1.8).

The compounds of formula I are prepared by reacting a compound of the formula II ##STR3## with a pyrimidine derivative of the formula III ##STR4## in the presence of a base, to give a compound of the formula I' ##STR5## and, to obtain an N-acylated derivative, N-acylating the compound of the formula I' with a reactive derivative of the carboxylic acid of the formula IV

    R.sub.4 COOH                                               (IV)

in which formulae above the substituents R₁ to R₇ are as defined for formula I and Z and Y are NH₂ or halogen, with the provision that, if Z is halogen, Y is NH₂ and, if Z is NH₂, Y is halogen.

The following reaction conditions are advantageous for the preparation of the compounds of formula I and/or I':

The N-alkylation of (II) with (III) to give (I') and the N-acylation of (I') with (IV) to give (I) take place with dehydrohalogenation.

The reaction temperature of the N-alkylation is in the range from -20° to +150° C., preferably from -20° to +30° C., and that for the N-acylation is in the range from 0° to 180° C., preferably from 0° to +150° C. or at the boiling point of the solvent or solvent mixture. In both reactions it is convenient for use an acid acceptor or a condensing agent. Examples of suitable acid acceptors or condensing agents are organic and inorganic bases, e.g. tertiary amines such as trialkylamines (trimethylamine, triethylamine, tripropylamine etc.), pyridine and pyridine bases (4-dimethylaminopyridine, 4-pyrrolidylaminopyridine etc.), oxides, hydroxides, carbonates and bicarbonates of alkali metals and alkaline earth metals, as well as alkali metal actetates.

Hydrogen halide evolved can in sove cases also be removed from the reaction mixture by introducing an inert gas, e.g. nitrogen.

The reactions may be conducted in the presence of inert solvents or diluents. Examples of suitable solvents and diluents are: aliphatic and aromatic hydrocarbons such as benzene, toluene, xylenes, petroleum ether; halogenated hydrocarbons such as chlorobenzene, methylene chloride, ethylene chloride, chloroform, carbon tetrachloride, tetrachloroethylene; ethers and ethereal compounds such as dialkyl ethers (diethyl ether, diisopropyl ether, tert-butylmethyl ether etc.), anisole, dioxan, tetrahydrofuran; nitriles such as acetonitrile and propionitrile; N,N-dialkylated amides such as dimethylformamide; dimethylsulfoxide; ketones such as acetones, diethyl ketone, methyl ethyl ketone; and mixtures of such solvents. In some cases the acylating or alkylating agent itself may be used as solvent. The presence of a catalyst such as dimethylformamide can be advantageous.

The reaction of (II) with (III) can also be carried out in an aqueous two-phase system in accordance with the generally known principle of phase transfer catalysis.

The following solvents for example are suitable for the organic water-immiscible phase: aliphatic and aromatic hydrocarbons such as pentane, hexane, cyclohexane, petroleum ether, ligroin, benzene, toluene, xylenes etc.; halogenated hydrocarbons such as dichloromethane, chloroform, carbon tetrachloride, ethylene dichloride, 1,2-dichloroethane, tetrachloroethylene and the like, or aliphatic ethers such as diethyl ether, diisopropyl ether, tert-butylmethyl ether etc.

Examples of suitable phase transfer catalysts are: tetraalkylammonium halides, hydrogen sulfates or hydroxides, e.g. tetrabutylammonium chloride, tetrabutylammonium bromide, tetrabutylammonium iodide, triethylbenzylammonium chloride or triethylbenzylammonium bromide, tetrapropylammonium chloride, tetrapropylammonium bromide or tetrapropylammonium iodide etc. Suitable phase transfer catalysts are also phosphonium salts. The reaction temperatures are generally in the range from -30° to 130° C. or may also be at the boiling point of the solvent or mixture of solvents.

Unless otherwise expressly specified, one or more inert solvents or diluents may be present in the preparation of all starting materials, intermediates and final products mentioned herein. Examples of suitable inert solvents or diluents are: aliphatic and aromatic hydrocarbons such as benzene, toluene, xylenes, petroleum ether; halogenated hydrocarbons such as chlorobenzene, methylene chloride, ethylene chloride, chloroform, carbon tetrachloride, tetrachloroethylene; ethers and ethereal compounds such as dialkyl ethers (diethyl ether, diisopropyl ether, tert-butylmethyl ether etc.), anisole, dioxan, tetrahydrofuran; nitriles such as acetonitrile, propionitrile; N,N-dialkylated amides such as dimethyl formamide; dimethylsulfoxide; ketones such as acetone, diethyl ketone, methyl ethyl ketone; and mixtures of such solvents with each other. It can often be convenient to carry out the reaction, or partial steps of a reaction, under an inert gas atmosphere and/or in absolute solvents. Suitable inert gases are nitrogen, helium, argon or, in some cases, also carbon dioxide.

The above described preparatory process, including all partial steps, constitutes an important object of the present invention.

Surprisingly, it has been found that the compounds of formula I have for practical purposes a very useful biocidal spectrum against fungi and bacteria, especially against phytopathogenic fungi and bacteria. They have very advantageous curative, systemic and, in particular, preventive properties, and can be used for protecting numerous cultivated plants. With the compounds of formula I it is possible to inhibit or destroy the micro-organisms which occur in plants or parts of plants (fruit, blossoms, leaves, stems, tubers, roots) in different crops of useful plants, while at the same time the parts of plants which grow later are also protected from attack by phytopathogenic micro-organisms and insects.

As microbicides, the compounds of formula I are effective against the phytopathogenic fungi belonging to the following classes: Fungi imperfecti (e.g. Botrytis, Helminthosporium, Fusarium, Septoria, Cercospora and Alternaria); Basidiomycetes (e.g. of the genera Hemileia, Rhizocotonia, Puccinia); and, in particular, against the class of the Ascomycetes (e.g. Venturia, Podosphaera, Erysiphe, Monilinia, Uncinula). In addition, the compounds of formula I have a systemic action. They can also be used as seed dressing agents for protecting seeds (fruit, tubers, grains) and plant cuttings against fungus infections as well as against phytopathogenic fungi which occur in the soil.

Accordingly, the invention also relates to pesticidal compositions, especially fungicidal compositions, and to the use thereof in agricultural or related fields.

The invention further embraces the preparation of such compositions, which comprises homogeneously mixing the active ingredient with one or more compounds or groups of compounds described herein. The invention furthermore relates to a method of treating plants, which comprises applying thereto the compounds of the formula I or the novel compositions.

Target crops to be protected within the scope of the present invention comprise e.g. the following species of plants: cereals (wheat, barley, rye, oats, rice, sorghum and related crops), beet (sugar beet and fodder beet), drupes, pomes and soft fruit (apples, pears, plums, peaches, almonds, cherries, strawberries, rasberries and blackberries), leguminous plants (beans, lentils, peas, soybeans), oil plants (rape, mustard, poppy, olives, sunflowers, coconuts, caster oil plants, cocoa beans, groundnuts), cucumber plants (cucumber, marrows, melons) fibre plants (cotton, flax, hemp, jute), citrus fruit (oranges, lemons, grapefruit, mandarins), vegetables (spinach, lettuce, asparagus, cabbages, carrots, onions, tomatoes, potatoes, paprika), lauraceae (avocados, cinnamon, camphor), or plants such as maize, tobacco, nuts, coffee, sugar cane, tea, vines, hops, bananas and natural rubber plants, as well as ornamentals (composites).

The compounds of formula I are normally applied in the form of compositions and can be applied to the crop area or plant to be treated, simultaneously or in succession, with further compounds.

These further compounds can be both fertilisers or micronutrient donors or other preparations that influence plant growth. They can also be selective herbicides, insecticides, fungicides, bactericides, nematicides, mollusicides or mixtures of several of these preparations, if desired together with further carriers, surfactants or application promoting adjuvants customarily employed in the art of formulation. Suitable carries and adjuvants can be solid or liquid and correspond to the substances ordinarily employed in formulation technology, e.g. natural or regenerated mineral substances, solvents, dispersants, wetting agents, tackifiers, binders or fertilisers.

A preferred method of applying a compound of the formula I, or an agrochemical composition which contains at least one of said compounds, is foliar application. The number of applications and the rate of application depend on the risk of infestation by the corresponding pathogen (type of fungus). However, the compound of formula I can also penetrate the plant through the roots via the soil (systemic action) by impregnating the locus of the plant with a liquid composition, or by applying the compounds in solid form to the soil, e.g. in granular form (soil application). The compounds of formula I may also be applied to seeds (coating) by impregnating the seeds either with a liquid formulation containing a compound of the formula I, or coating them with a solid formulation. In special cases, further types of application are also possible, e.g. selective treatment of the plant stems or buds.

The compounds of the formula I are used in unmodified form or, preferably, together with the adjuvants conventionally employed in the art of formulation, and are therefore formulated in known manner to emulsifiable concentrates, coatable pastes, directly sprayable or dilutable solutions, dilute emulsions, wettable powders, soluble powders, dusts, granulates, and also encapsulations in e.g. polymer substances. As with the nature of the compositions, the methods of application, such as spraying, atomising, dusting, scattering or pouring, are chosen in accordance with the intended objectives and the prevailing circumstances. Advantageous rates of application are normally from 50 g to 5 kg of active ingredient (a.i.) per hectare, preferably from 100 g to 2 kg a.i./ha, most preferably from 200 g to 600 g a.i./ha.

The formulations, i.e. the compositions or preparations containing the compound (active ingredient) of the formula I and, where appropriate, a solid or liquid adjuvant, are prepared in known manner, e.g. by homogeneously mixing and/or grinding the active ingredients with extenders, e.g. solvents, solid carriers and, where appropriate, surface-active compounds (surfactants).

Suitable solvents are: aromatic hydrocarbons, preferably the fractions containing 8 to 12 carbon atoms, e.g. xylene mixtures or substituted naphthalenes, phthalates such as dibutyl phthalate or dioctyl phthalate, aliphatic hydrocarbons such as cyclohexane or paraffins, alcohols and glycols and their ethers and esters, such as ethanol, ethylene glycol monomethyl or monoethyl ether, ketones such as cyclohexanone, strongly polar solvents such as N-methyl-2-pyrrolidone, dimethylsulfoxide or dimethylformamide, as well as epoxidised vegetable oils such as epoxidised coconut oil or soybean oil; or water.

The solid carriers used e.g. for dusts and dispersible powders, are normally natural mineral fillers such as calcite, talcum, kaolin, montmorillonite or attapulgite. In order to improve the physical properties it is also possible to add highly dispersed silicic acid or highly dispersed absorbent polymers. Suitable granulated adsorptive carriers are porous types, for example pumice, broken brick, sepiolite or bentonite; and suitable nonsorbent carriers are materials such as calcite or sand. In addition, a great number of pregranulated materials of inorganic or organic nature can be used, e.g. especially dolomite or pulverised plant residues. Particularly advantageous application promoting adjuvants which are able to reduce substantially the rate of application are also natural (animal or vegetable) or synthetic phospholipids of the series of the cephalins and lecithins, e.g. phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl choline, sphingomyeline, phosphatidyl inisotol, phosphatidyl glycerol, lysolecithin, plasmalogenes or cardiolipin, which can be obtained e.g. from animal or plant cells, in particular from the brain, heart, liver, egg yokes or soya beans. Examples of useful physical forms are phosphatidyl choline mixtures. Examples of synthetic phospholipids are dioctanoylphosphatidyl choline and dipalmitoylphosphatidyl choline.

Depending on the nature of the compound of the formula I to be formulated, suitable surface-active compounds are nonionic, cationic and/or anionic sufactants having good emulsifying, dispersing and wetting properties. The term "surfactants" will also be understood as comprising mixtures of surfactants.

Suitable anionic surfactants can be both water-soluble soaps and water-soluble synthetic surface-active compounds.

Suitable soaps are the alkali metal salts, alkaline earth metal salts or unsubstituted or substituted ammonium salts or higher fatty acids (C₁₀ -C₂₂), e.g. the sodium or potassium salts of oleic or stearic acid, or of natural fatty acid mixtures which can be obtained e.g. from coconut oil or tallow oil. Mentioned may also be made of fatty acid methyltaurin salts.

More frequently, however, so-called synthetic surfactants are used, especially fatty sulfonates, fatty sulfates, sulfonated benzimidazole derivatives or alkylarylsulfonates.

The fatty sulfonates or sulfates are usually in the form of alkali metal salts, alkaline earth metal salts or unsubstituted or substituted ammonium salts and contain a C₈ -C₂₂ alkyl radical which also includes the alkyl moiety of acyl radicals, e.g. the sodium or calcium salt of lignosulfonic acid, of dodecylsulfate or of a mixture of fatty alcohol sulfates obtained from natural fatty acids. These compounds also comprise the salts of sulfuric acid esters and sulfonic acids of fatty alcohol/ethylene oxide adducts. The sulfonated benzimidazole derivatives preferably contain 2 sulfonic acid groups and one fatty acid radical containing 8 to 22 carbon atoms. Examples of alkylarylsulfonates are the sodium, calcium or triethanolamine salts of dodecylbenzesulfonic acid, dibutylnaphthalenesulfonic acid, or of a naphthalenesulfonic acid/formaldehyde condensation product. Also suitable are corresponding phosphates, e.g. salts of the phosphoric acid ester of an adduct of p-nonylphenol with 4 to 14 moles of ethylene oxide.

Non-ionic surfactants are preferably polyglycol ether derivatives of aliphatic or cycloaliphatic alochols, or saturated or unsaturated fatty acids and alkylphenols, said derivatives containing 3 to 30 glycol ether groups and 8 to 20 carbon atoms in the (aliphatic) hydrocarbon moiety and 6 to 18 carbon atoms in the alkyl moiety of the alkylphenols.

Further suitable non-ionic surfactants are the water-soluble adducts of polyethylene oxide with polypropylene glycol, ethylenediamine propylene glycol and alkylpolypropylene glycol containing 1 to 10 carbon atoms in the alkyl chain, which adducts contain 20 to 250 ethylene glycol ether groups and 10 to 100 propylene glycol ether groups. These compounds usually contain 1 to 5 ethylene glycol units per propylene glycol unit.

Representative examples of non-ionic surfactants are nonylphenolpolyethoxyethanols, castor oil polyglycol ethers, polypropylene/polyethylene oxide adducts, tributylphenoxypolyethoxyethanol, polyethylene glycol and octylphenoxyethoxyethanol. Fatty acid esters of polyoxyethylene sorbitan and polyoxyethylene sorbitan trioleate are also suitable non-ionic surfactants.

Cationic surfactants are preferably quaternary ammonium salts which contain, as N-substituent, at least one C₈ -C₂₂ alkyl radical and, as further substituents, lower unsubstituted or halogenated alkyl, benzyl or lower hydroxyalkyl radicals. The salts are preferably in the form of halides, methylsulfates or ethylsulfates, e.g. stearyltrimethylammonium chloride or benzyldi(2-chloroethyl)ethylammonium bromide.

The surfactants customarily employed in the art of formulation are described e.g. in "McCutcheon's Detergents and Emulsifiers Annual", MC Publishing Corp. Ridgewood, N.J., 1981; Helmut Stache "Tensid-Taschenbuch", Carl Hanser-Verlag Munich/Vienna 1981.

The agrochemical compositions usually contain 0.1 to 99%, preferably 0.1 to 95%, of a compound of the formula I, 99.9 to 1%, preferably 99.8 to 5%, of a solid or liquid adjuvant, and 0 to 25%, preferably 0.1 to 25%, of a surfactant.

Whereas commercial products are preferably formulated as concentrates, the end user will normally employ dilute formulations.

The compositions may also contain further ingredients such as stabilisers, antifoams, viscosity regulators, binders, tackifiers as well as fertilisers or other compounds for obtaining special effects.

Such agrochemical compositions also constitute an object of the present invention.

The invention is illustrated in more detail by the following Examples, without implying any restriction to what is described therein. Parts and percentages are by weight.

PREPARATORY EXAMPLES Example P1 Preparation of ##STR6## N-(3'-Chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4,6-dichloropyrimidine

With stirring, 13.2 parts of 85% powdered potassium hydroxide are added, in portions, at room temperature to a solution of 15 parts of 4,6-dichloro-4-aminopyrimidine in 400 ml of tetrahydrofuran. During this addition, the temperature rises to 23° C. in the course of half an hour. The reaction mixture is cooled to 5° C. and 28 parts of 2,4-dichloro-3,5-dinitrobenzotrifluoride in 80 ml of tetrahydrofuran are added dropwise to the beige-coloured suspension, which turns red. The reaction mixture is stirred for 15 hours at room temperature, poured into ice-water, acidified with 15 ml of concentrated hydrochloric acid, and extracted with two 200 ml portions of ethyl acetate. The combined extracts are washed with two 100 ml portions of water, dried over sodium sulfate, filtered and concentrated. The crystalline residue is recrystallised from 400 ml of isopropanol. The yellow crystals so obtained have a melting point of 199°-200° C.

The following compounds of the formula I are also prepared in accordance with the described procedures:

                                      TABLE 1                                      __________________________________________________________________________     Compounds of the formula                                                        ##STR7##                                                                                                        Physical                                     Compound                                                                             R.sub.5                                                                               R.sub.6  R.sub.7     data [°C.]                            __________________________________________________________________________     1.1   Cl     H        Cl          m.p. 198-200                                 1.2   OCH.sub.3                                                                             H        S(2-pyridyl)                                                                               m.p. 67-70                                   1.3   H      H        H           m.p. 189-191                                 1.4   CCl.sub.3                                                                             H        OC.sub.2 H.sub.4 OC.sub.2 H.sub.4 OC.sub.2 H.sub.5                                         m.p. 54-59                                   1.5   CH.sub.3                                                                              H        Cl          m.p. 172-174                                 1.6   CCl.sub.3                                                                             H        OC.sub.2 H.sub.4 OCH.sub.3                                                                 m.p. 130-133                                 1.7   CH.sub.3                                                                              H        OCH.sub.3   m.p. 209-210 decomp.                         1.8   OCH.sub.3                                                                             H        O[C.sub.6 H.sub.4 Cl(4)]                                                                   m.p. 53-58                                   1.9   Cl     H        OCH.sub.3   m.p. 180-181                                 1.10  OCH.sub.3                                                                             H        O[C.sub.6 H.sub.4 Cl(4)]                                                                   m.p. 133-137                                 1.11  Cl     H        CCl.sub.3   m.p. 161-163                                 1.12  CCl.sub.3                                                                             H        S(2-pyridyl)                                                                               m.p. 189-192.5                               1.13  OCH.sub.3                                                                             H        CH.sub.2 OCH.sub.3                                                                         m.p. 103-106                                 1.14  CH.sub.3                                                                              H        OCHF.sub.2  m.p. 147-148                                 1.15  CH.sub.3                                                                              H        CH.sub.3    m.p. 155-156                                 1.16  OCH.sub.3                                                                             H        OCH.sub.3   m.p. 169-171                                 1.17  OCH.sub.3                                                                             H        SC.sub.4 H.sub.9n                                                                          m.p. 103-104                                 1.18  CH.sub.3                                                                              H        H           m.p. 164-165                                 1.19  CF.sub.3                                                                              CH.sub.3 H           m.p. 126-129                                 1.20  CF.sub.3                                                                              H        CH.sub.3    m.p. 145-147                                 1.21  SCH.sub.3                                                                             CN       H                                                        1.22  OCH.sub.3                                                                             CN       H           m.p. 152-158                                 1.23  C.sub.2 H.sub.5                                                                       H        H                                                        1.24  H      OC.sub.4 H.sub.9i                                                                       H                                                        1.25  OCH.sub.2 OCH.sub.3                                                                   H        OCH.sub.2 OCH.sub.3                                      1.26  Cl     I        H                                                        1.27  I      H        I                                                        1.28  CH.sub.3                                                                              CN       SO.sub.2 CH.sub.3                                        1.29  OCH.sub.3                                                                             J        CH.sub.2 F  decompos. from                                                                 87°                                   1.30  C.sub.6 H.sub.5                                                                       H        H                                                        1.31  H      OCH.sub.3                                                                               H                                                        1.32  OC.sub.2 H.sub.5                                                                      H        CH.sub.2 F  m.p. 118-120                                 1.33  CH.sub.3                                                                              NO.sub.2 SO.sub.2 CH.sub.3                                        1.34  C.sub.4 H.sub.9n                                                                      NO.sub.2 H                                                        1.35  OCH.sub.3                                                                             H        OC.sub.2 H.sub.5                                         1.36  CH.sub.3                                                                              H        C.sub.3 H.sub.7n                                         1.37  Br     H        H                                                        1.38  Cl     F        H                                                        1.39  Cl     H        S(O)CH.sub.3                                             1.40  H      OC.sub.6 H.sub.5                                                                        H                                                        1.41  Cl     H        C.sub.6 H.sub.13n                                        1.42  H      OC.sub.3 H.sub.7n                                                                       H                                                        1.43  OC.sub.2 H.sub.5                                                                      H        H                                                        1.44  OCH.sub.3                                                                             H        CH.sub.2 OC.sub.2 H.sub.5                                                                  m.p. 104-106                                 1.45  OC.sub.4 H.sub.9n                                                                     H        OC.sub.4 H.sub.9n                                        1.46  Cl     H        SO.sub.2 CH.sub.3                                        1.47  Cl     OCH.sub.3                                                                               H                                                        1.48  SC.sub.2 H.sub.5                                                                      H        SC.sub.2 H.sub.5                                         1.49  CH.sub.3                                                                              H        SC.sub.6 H.sub.5                                         1.50  CH.sub.2 OCH.sub.3                                                                    H        H                                                        1.51  OCH.sub.3                                                                             NO.sub.2 H                                                        1.52  Cl     H        CH.sub.2 Cl resin                                        1.53  Cl     OC.sub.6 H.sub.5                                                                        H                                                        1.54  Cl     CN       OCH.sub.3   m.p. 211-212                                 1.55  OCH.sub.3                                                                             Cl       H                                                        1.56  Cl     S(O)CH.sub.3                                                                            H                                                        1.57  H      SCH.sub.2C.sub. 6 H.sub.5                                                               H                                                        1.58  C.sub.6 H.sub.5                                                                       CH.sub.3 H                                                        1.59  SCH.sub.3                                                                             H        H                                                        1.60  OC.sub.2 H.sub.5                                                                      NO.sub.2 H                                                        1.61  H      CH.sub.2C.sub. 6 H.sub.5                                                                H                                                        1.62  Cl     H        C.sub.2 H.sub.5                                                                            m.p. 147-148                                 1.63  OCH.sub.3                                                                             H        CH.sub.2 F  m.p. 111-112                                 1.64  Cl     H        OC.sub.2 H.sub.5                                         1.65  CH.sub.2 OC.sub.2 H.sub.5                                                             OC.sub.2 H.sub.5                                                                        H                                                        1.66  H      SCH.sub.3                                                                               H                                                        1.67  OCH.sub.3                                                                             I        H                                                        1.68  Cl     SO.sub.2 CH.sub.3                                                                       H                                                        1.69  OCH.sub.3                                                                             F        H                                                        1.70  Cl     H        SCN                                                      1.71  C.sub.2 H.sub.5                                                                       H        Cl          m.p. 147-148                                 1.72  Cl     OC.sub.2 H.sub.5                                                                        H                                                        1.73  SO.sub.2 C.sub.2 H.sub.5                                                              H        H                                                        1.74  Cl     H        CH.sub.2 OCH.sub.3                                       1.75  Cl     H        OCH.sub.2 CHCH.sub.2                                                                       m.p. 97-98                                   1.76  Cl     NO.sub.2 CH.sub.3                                                 1.77  H      C.sub.6 H.sub.5                                                                         H                                                        1.78  CH.sub.3                                                                              NO.sub.2 CH.sub.3                                                 1.79  CH.sub.3                                                                              C.sub.2 H.sub.5                                                                         H                                                        1.80  Br     H        CH.sub.3                                                 1.81  CCl.sub.3                                                                             H        CCl.sub.3                                                1.82  H      Cl       H                                                        1.83  CH.sub.3                                                                              Br       H                                                        1.84  OC.sub.4 H.sub.9n                                                                     H        CH.sub.3                                                 1.85  Cl     CH.sub.3 H                                                        1.86  CH.sub.3                                                                              Cl       H                                                        1.87  H      NO.sub.2 H           semicrystalline                              1.88  Cl     Br       Cl          semicrystalline                              1.89  OCH.sub.2C.sub. 6 H.sub.5                                                             H        F                                                        1.90  Cl     H        OC.sub.3 H.sub.7i                                        1.91  CH.sub.3                                                                              Cl       CH.sub.3                                                 1.92  H      SC.sub.6 H.sub.5                                                                        H                                                        1.93  CH.sub.2 Br                                                                           Br       CH.sub.2 Br                                              1.94  C.sub.2 H.sub.5                                                                       CH.sub.3 H                                                        1.95  CH.sub.3                                                                              CN       H                                                        1.96  F      H        F                                                        1.97  H      F        H                                                        1.98  Cl     CH.sub.2C.sub. 6 H.sub.5                                                                H                                                        1.99  C.sub.6 H.sub.5                                                                       CN       H                                                        1.100 Cl     CH.sub.2 C.sub.6 H.sub.5                                                                Cl                                                       1.101 Cl     SCH.sub.3                                                                               H                                                        1.102 Cl     C.sub.6 H.sub.5                                                                         Cl                                                       1.103 CH.sub.3                                                                              NO.sub.2 SCH.sub.3                                                1.104 Cl     CH.sub.2 CH.sub.2 Cl                                                                    CH.sub.3                                                 1.105 CH.sub.3                                                                              Br       C.sub.6 H.sub.5                                          1.106 Cl     C.sub.2 H.sub.5                                                                         Cl                                                       1.107 Cl     Br       CH.sub.3                                                 1.108 CH.sub.3                                                                              J        CH.sub.3                                                 1.109 Cl     CH.sub.3 CH.sub.3                                                 1.110 CH.sub.3                                                                              Br       CH.sub.3                                                 1.111 Cl     C.sub.2 H.sub.5                                                                         CH.sub.3                                                 1.112 Cl     CH.sub.3 Cl                                                       1.113 Cl     C.sub.4 H.sub.9n                                                                        Cl                                                       1.114 Cl     H        OCH.sub.2 C CH                                                                             m.p. 129-130                                 1.115 Cl     CH.sub.2 CCH                                                                            C.sub.6 H.sub.5                                          1.116 OCH.sub.3                                                                             CH.sub.3 CH.sub.3                                                 1.117 Cl     CH.sub.2 CH.sub.2 CN                                                                    CH.sub.3                                                 1.118 Cl     OCH.sub.3                                                                               CH.sub.2 OCH.sub.3                                       1.119 Cl     Cl       CH.sub.3                                                 1.120 OCH.sub.3                                                                             C.sub.2 H.sub.5                                                                         OCH.sub.3                                                1.121 CH.sub.3                                                                              Br       C.sub.3 H.sub.7n                                         1.122 Cl     OC.sub.2 H.sub.5                                                                        Cl                                                       1.123 OCH.sub.3                                                                             OCH.sub.3                                                                               CH.sub.3                                                 1.124 OC.sub.2 H.sub.5                                                                      OC.sub.2 H.sub.5                                                                        OC.sub.2 H.sub.5                                         1.125 CH.sub.3                                                                              CN       SCH.sub.3                                                1.126 Cl     CN       CH.sub.3                                                 1.127 CH.sub.3                                                                              Br       SCH.sub.3                                                1.128 Cl     C.sub.6 H.sub.4 Cl(4)                                                                   Cl                                                       1.129 Cl     OC.sub.2 H.sub.5                                                                        CH.sub.2 OC.sub.2 H.sub.5                                1.130 CH.sub.3                                                                              Br       OC.sub.6 H.sub.5                                         1.131 OCH.sub.3                                                                             CH.sub.3 OCH.sub.3                                                1.132 SCH.sub.3                                                                             C.sub.6 H.sub.5                                                                         SCH.sub.3                                                1.133 Cl     OCH.sub.3                                                                               Cl                                                       1.134 OCH.sub.3                                                                             OCH.sub.3                                                                               CH.sub.2 OCH.sub.3                                       1.135 Cl     CH.sub.2C.sub. 6 H.sub.5                                                                OCH.sub.3                                                1.136 OCH.sub.3                                                                             Br       CH.sub.3                                                 1.137 Cl     C.sub.2 H.sub.4 OCH.sub.3                                                               CH.sub.3                                                 1.138 OCH.sub.3                                                                             C.sub.2 H.sub.4 OC.sub.2 H.sub.5                                                        CH.sub.3                                                 1.139 Cl     C.sub.6 H.sub.4 (OCH.sub.3)(4)                                                          Cl                                                       1.140 Cl     C.sub.5 H.sub.11n                                                                       Cl                                                       1.141 C.sub.5 H.sub.11n                                                                     H        H                                                        1.142 CH.sub.3                                                                              CN       S(O)CH.sub.3                                             1.143 Cl     H        SCH.sub.3   viscous product                              1.144 CH.sub.3                                                                              I        CH.sub.3    resin                                        1.145 Cl     H        SCH.sub.2 CHCH.sub.2                                                                       resin                                        1.146 Cl     H        OCH.sub.2 CF.sub.3                                       1.147 Cl     Cl       Cl                                                       1.148 Cl     Br       OCH.sub.3                                                1.149 Cl     Br       OC.sub.2 H.sub.5                                         1.150 Cl     Br       OC.sub.3 H.sub.7i                                        1.151 Cl     Br       OC.sub.4 H.sub.9sec.                                     1.152 Cl     Br       OCH.sub.2 CF.sub.3                                       1.153 Cl     Br       OCH.sub.2 CH.sub.2 Cl                                    1.154 Cl     Br       OCH.sub.2 CH.sub.2 Br                                    1.155 Cl     Br       OCHF.sub.2                                               1.156 Cl     Br       OCH.sub.2 CH.sub.2 OCH.sub.3                             1.157 Cl     Br       SC.sub.2 H.sub.5                                         1.158 Cl     Br       SC.sub.3 H.sub.7i                                        1.159 Cl     Br       OC(CH.sub.3).sub.2 CCH                                   1.160 Cl     Br       OCH.sub.2phenyl                                          1.161 Cl     Br       SCN                                                      1.162 Cl     Br       OCH.sub.2 C CH                                           1.163 Cl     Br       OCH.sub.2 CHCH.sub.2                                     __________________________________________________________________________

                  TABLE 2                                                          ______________________________________                                         Compounds of the formula                                                        ##STR8##                                                                      Com-                                 Physical                                  pound R.sub.3                                                                               R.sub.5 R.sub.6   R.sub.7                                                                              data [°C.]                         ______________________________________                                         2.1   F      Cl      H         Cl    resin                                     2.2   I      Cl      H         Cl    resin                                     2.3   Br     F       CH.sub.3  F                                               2.4   Br     Cl      CH.sub.3  Cl                                              2.5   F      Cl      OC.sub.2 H.sub.5                                                                         Cl                                              2.6   I      C.sub.2 H.sub.5                                                                        H         H                                               2.7   F      Cl      CH.sub.2C.sub.6 H.sub.5                                                                  Cl                                              2.8   Br     OC.sub.2 H.sub.5                                                                       H         H                                               2.9   Br     Cl      NO.sub.2  SCH.sub.3                                       2.10  F      Cl      Cl        CH.sub.3                                        2.11  Br     Cl      F         H                                               2.12  F      SCH.sub.3                                                                              CN        H                                               2.13  F      OCH.sub.3                                                                              CN        H                                               2.14  H      CH.sub.3                                                                               H         CH.sub.3                                                                             m.p. 200-202                              ______________________________________                                    

                                      TABLE 3                                      __________________________________________________________________________     Compounds of the formula                                                        ##STR9##                                                                                                      Physical                                       Compound                                                                             R.sub.5                                                                               R.sub.6  R.sub.7   data [°C.]                              __________________________________________________________________________     3.1   Cl     H        OCH.sub.2 F                                                                              resin                                          3.2   Cl     H        Cl                                                       3.3   SCH.sub.3                                                                             CN       H                                                        3.4   OCH.sub.3                                                                             CN       H                                                        3.5   CH.sub.3                                                                              CH.sub.3 H                                                        3.6   OCH.sub.3                                                                             Br       H                                                        3.7   OC.sub.3 H.sub.7i                                                                     H        OC.sub.3 H.sub.7i                                        3.8   CH.sub.3                                                                              CN       H                                                        3.9   OC.sub.2 OC.sub.2 H.sub.5                                                             H        CH.sub.3                                                 3.10  SC.sub.2 H.sub.5                                                                      H        CH.sub.3                                                 3.11  OC.sub.2 H.sub.5                                                                      H        F                                                        3.12  OCH.sub.3                                                                             OC.sub.2 H.sub.5                                                                        H                                                        3.13  OCH.sub.3                                                                             I        CH.sub.2 F                                                                               resin                                          3.14  CH.sub.3                                                                              CN       S(O)CH.sub.3                                             3.15  OC.sub.2 H.sub.5                                                                      H        CH.sub.3                                                 3.16  C.sub.4 H.sub.9i                                                                      H        H                                                        3.17  Cl     CH.sub.3 H                                                        3.18  Cl     H        H                                                        3.19  C.sub.6 H.sub.5                                                                       CN       H                                                        3.20  H      CH.sub.2C.sub.6 H.sub.5                                                                 H                                                        3.21  CH.sub.3                                                                              CN       SO.sub.2 CH.sub.3                                        3.22  C.sub.3 H.sub.7n                                                                      H        H                                                        3.23  Cl     OCH.sub.3                                                                               H                                                        3.24  CH.sub.2 OCH.sub.3                                                                    H        CH.sub.3                                                 3.25  CHBr.sub.2                                                                            Br       H                                                        3.26  OCH.sub.3                                                                             OCH.sub.3                                                                               H                                                        3.27  Cl     H        SC.sub.2 H.sub.5                                         3.28  CH.sub.3                                                                              NO.sub.2 SO.sub.2 CH.sub.3                                        3.29  SC.sub.3 H.sub.7i                                                                     H        CH.sub.3                                                 3.30  Cl     F        H                                                        3.31  OC.sub.2 H.sub.5                                                                      OCH.sub.3                                                                               H                                                        3.32  CH.sub.3                                                                              H        SC.sub.3 H.sub.7n                                        3.33  OCH.sub.3                                                                             H        H                                                        3.34  CH.sub.3                                                                              C.sub.2 H.sub.4 OC.sub.2 H.sub.5                                                        H                                                        3.35  Cl     H        SO.sub.2 CH.sub.3                                        3.36  OC.sub.2 H.sub.5                                                                      NO.sub.2 H                                                        3.37  OCH.sub.3                                                                             F        H                                                        3.38  CH.sub.3                                                                              H        SCH.sub.3                                                3.39  C.sub.4 H.sub.9n                                                                      H        CH.sub.3                                                 3.40  SC.sub.2 H.sub.5                                                                      H        H                                                        3.41  Cl     H        OC.sub.2 H.sub. 5                                        3.42  Cl     SO.sub.2 CH.sub.3                                                                       H                                                        3.43  C.sub.3 H.sub.7i                                                                      H        H                                                        3.44  H      C.sub.4 H.sub.9n                                                                        H                                                        3.45  CH.sub.2 OCH.sub.3                                                                    OCH.sub.3                                                                               H                                                        3.46  H      CN       H                                                        3.47  Cl     OC.sub.2 H.sub.5                                                                        H                                                        3.48  SO.sub.2 C.sub.2 H.sub.5                                                              H        H                                                        3.49  CH.sub.3                                                                              H        OC.sub.6 H.sub.5                                         3.50  OCH.sub.2C.sub.6 H.sub.5                                                              H        F                                                        3.51  Cl     H        SCH.sub.3                                                3.52  F      H        F                                                        3.53  Cl     CH.sub.2C.sub. 6 H.sub.5                                                                C.sub.6 H.sub.5                                          3.54  H      Br       H                                                        3.55  Cl     SCH.sub.3                                                                               H                                                        3.56  CCl.sub.3                                                                             H        CCl.sub.3                                                3.57  H      C.sub.3 H.sub.7i                                                                        H                                                        3.58  CH.sub.3                                                                              H        CF.sub.3                                                 3.59  Cl     SC.sub.6 H.sub.5                                                                        H                                                        3.60  OC.sub.3 H.sub.7i                                                                     H        CH.sub.3                                                 3.61  Cl     H        SCN                                                      3.62  CH.sub.2C.sub.6 H.sub.5                                                               H        CH.sub.3                                                 3.63  Cl     CH.sub.2C.sub.6 H.sub.5                                                                 Cl                                                       3.64  SCH.sub.2C.sub.6 H.sub.5                                                              H        CH.sub.3                                                 3.65  Cl     Br       Cl                                                       3.66  Cl     CH.sub.2C.sub.6 H.sub.5                                                                 CH.sub.3                                                 3.67  OC.sub.2 H.sub.5                                                                      H        CH.sub.2 F                                                                               resin                                          3.68  Cl     C.sub.6 H.sub.5                                                                         Cl                                                       3.69  Cl     Cl       Cl                                                       3.70  H      CH.sub.3 H                                                        3.71  SCH.sub.2C.sub.6 H.sub.5                                                              H        SCH.sub.2C.sub.6 H.sub.5                                 3.72  OCH.sub.3                                                                             H        CH.sub.2 OC.sub.2 H.sub.5                                                                resin                                          3.73  Cl     CH.sub.3 Cl                                                       3.74  H      OC.sub.4 H.sub.9                                                                        H                                                        3.75  Cl     OC.sub.2 H.sub.5                                                                        Cl                                                       3.76  Cl     Cl       CH.sub.3                                                 3.77  Cl     C.sub.5 H.sub.9n                                                                        CH.sub.3                                                 3.78  SCH.sub.3                                                                             H        SCH.sub.3                                                3.79  Cl     C.sub.4 H.sub.9n                                                                        Cl                                                       3.80  H      OC.sub.4 H.sub.9sek.                                                                    H                                                        3.81  Cl     H        CH.sub.2 Cl                                              3.82  CH.sub.3                                                                              C.sub.6 H.sub.5                                                                         CH.sub.3                                                 3.83  CH.sub.3                                                                              CH.sub.3 CH.sub.3                                                 3.84  H      cyclohexyl                                                                              H                                                        3.85  SC.sub.3 H.sub.7n                                                                     H        SC.sub.3 H.sub. 7n                                       3.86  H      OC.sub.2 H.sub.5                                                                        H                                                        3.87  Cl     CN       OCH.sub.3                                                3.88  OCH.sub.3                                                                             H        CH.sub.2 F                                               3.89  OCH.sub.3                                                                             OCH.sub.3                                                                               OCH.sub.3                                                3.90  C.sub.2 H.sub.5                                                                       H        Cl                                                       3.91  CN     H        CH.sub.3                                                 3.92  Cl     NO.sub.2 OCH.sub.3                                                3.93  H      OC.sub.2 H.sub.4 OCH.sub.3                                                              H                                                        3.94  Cl     H        C.sub.6 H.sub.5                                          3.95  CH.sub.3                                                                              CH.sub.2CHCH.sub.2                                                                      CH.sub.3                                                 3.96  C.sub. 6 H.sub.5                                                                      H        C.sub.6 H.sub.5                                          3.97  SC.sub.4 H.sub.9n                                                                     H        CH.sub.3                                                 3.98  CH.sub.3                                                                              H        C.sub.6 H.sub.5                                          3.99  Br     H        Br                                                       3.100 OC.sub.2 H.sub.5                                                                      H        OC.sub.2 H.sub.5                                         3.101 H      CH.sub.2 OCH.sub.3                                                                      H                                                        3.102 Cl     OCH.sub.3                                                                               Cl                                                       3.103 OCH.sub.3                                                                             H        SCH.sub.3                                                3.104 Cl     OCH.sub.3                                                                               CH.sub.3                                                 3.105 Cl     C.sub.3 H.sub. 7n                                                                       C.sub.6 H.sub.5                                          3.106 Cl     C.sub.6 H.sub.3 Cl.sub.2 (2,4)                                                          Cl                                                       3.107 Cl     H        SC.sub.3 H.sub. 7n                                       3.108 Cl     C.sub.6 H.sub.4 (CH.sub.3)(4)                                                           Cl                                                       3.109 Cl     Br       CH.sub.3                                                 3.110 Cl     C.sub.2 H.sub.5                                                                         Cl                                                       3.111 Cl     C.sub.6 H.sub.4 (OCH.sub.3)(4)                                                          Cl                                                       3.112 Cl     CH.sub.3 C.sub.6 H.sub.5                                          3.113 C.sub.6 H.sub.4 (CF.sub.3)(4)                                                         CN       H                                                        3.114 Cl     C.sub.6 H.sub.4 (NO.sub.2)(4)                                                           Cl                                                       3.115 Cl     H        SCH.sub.3                                                3.116 Cl     H        OCH.sub.2 CHCH.sub.2                                                                     resin                                          3.117 C.sub.6 H.sub. 13n                                                                    H        H                                                        3.118 Cl     H        OCH.sub.2 CCH                                            3.119 Cl     H        SCH.sub.3                                                3.120 Cl     Cl       OCH.sub.3                                                3.121 Cl     Cl       OC.sub.2 H.sub.5                                         3.122 Cl     Cl       OC.sub.4 H.sub.8sec.                                     3.123 Cl     Cl       OC.sub.4 H.sub. 9tert.                                   3.124 Cl     Cl       OCH.sub.2 CF.sub.3                                       3.125 Cl     Cl       OCHF.sub.2                                               3.126 Cl     Cl       OCH.sub.2 CH.sub.2 Cl                                    3.127 Cl     Cl       OCH.sub.2 CH.sub.2 OC.sub.2 H.sub.5                      3.128 Cl     Cl       OC(CH.sub.3).sub.2 CCH                                                                   semicrystalline                                3.129 Cl     Cl       OCH.sub. 2phenyl                                         3.130 Cl     Cl       SCN                                                      3.131 Cl     Cl       SC.sub.2 H.sub.5                                         3.132 Cl     Cl       SC.sub.3 H.sub.7i                                        3.132 Cl     Cl       OCH.sub.2 CCH                                            3.133 Cl     Cl       OCH.sub.2 CCH.sub.2                                      __________________________________________________________________________

                                      TABLE 4                                      __________________________________________________________________________     Compounds of the formula                                                        ##STR10##                                                                                                         Physical                                   Compound                                                                             R.sub.1                                                                           R.sub.2                                                                           R.sub.3                                                                           R.sub.4  R.sub.5                                                                            R.sub.6                                                                             R.sub.7                                                                           data [°C.]                          __________________________________________________________________________     5.1   NO.sub.2                                                                          CF.sub.3                                                                          Cl C(O)CH.sub.3                                                                            Cl  H    Cl                                            5.2   CF.sub.3                                                                          NO.sub.2                                                                          Cl C(O)CH.sub.3                                                                            Cl  H    Cl                                            5.3   NO.sub.2                                                                          CF.sub.3                                                                          Cl C(O)CH.sub.2 Cl                                                                         Cl  C.sub.4 H.sub. 9n                                                                   Cl                                            5.4   NO.sub.2                                                                          CF.sub.3                                                                          Cl C(O)CH.sub.2 OCH.sub.3                                                                  Cl  CH.sub.3                                                                            Cl                                            5.5   NO.sub.2                                                                          CF.sub.3                                                                          Cl C(O)CH.sub.3                                                                            Cl  OC.sub.2 H.sub.5                                                                    Cl                                            5.6   CF.sub.3                                                                          NO.sub.2                                                                          Cl C(O)CH.sub.2 OC.sub.2 H.sub.5                                                           Cl  CH.sub.3                                                                            Cl                                            5.7   CF.sub.3                                                                          NO.sub.2                                                                          Cl C(O)CH.sub.2 OCH.sub.3                                                                  Cl  CN   CH.sub.3                                      5.8   NO.sub.2                                                                          CF.sub.3                                                                          Cl C(O)CH.sub.3                                                                            SCH.sub.3                                                                          CN   H                                             5.9   NO.sub.2                                                                          CF.sub.3                                                                          Cl C(O)CH.sub.3                                                                            OCH.sub.3                                                                          CN   H                                             __________________________________________________________________________

                  TABLE 5                                                          ______________________________________                                         Compounds of the formula                                                        ##STR11##                                                                                                         Physical                                   Compound                                                                               R.sub.5                                                                               R.sub.6  R.sub.7     data [°C.]                          ______________________________________                                         5.1     Cl     H        SCH.sub.3                                              5.2     Cl     H        SCH.sub.2 CHCH.sub.2                                   5.3     Cl     H        OCH.sub.2 CHCH.sub.2                                   5.4     Cl     H        OCH.sub.2 CCH                                          5.5     Cl     Br       OCH.sub.3                                              5.6     Cl     Cl       OC.sub.2 H.sub.5                                       5.7     Cl     Br       OCH.sub.2 CF.sub.3                                     5.8     Cl     Cl       OCH.sub.2 CH.sub.2 Cl                                  5.9     Cl     Cl       OCH.sub.2 F                                            5.10    Cl     Cl       SC.sub.2 H.sub.5                                       5.11    Cl     Cl       OC(CH.sub.3).sub.2 CCH                                 5.12    Cl     Br       OCH.sub.2phenyl                                        5.13    Cl     Br       SCN                                                    5.14    H      Cl       OCH.sub.2 CH.sub.2 Br                                  5.15    Cl     Br       CH.sub.2 OCH.sub.3                                     and the compound of the formula                                                 ##STR12##                                                                     viscous product compound 6.1                                                   ______________________________________                                    

FORMULATION EXAMPLES Formulation Examples for liquid active ingredients of the formula I (throughout, percentages are by weight)

    ______________________________________                                         F1. Emulsifiable concentrates                                                                        (a)     (b)    (c)                                       ______________________________________                                         a compound of tables 1 to 5                                                                          25%     40%    50%                                       calcium dodecylbenzenesulfonate                                                                       5%      8%     6%                                       castor oil polyethylene glycol ether                                                                  5%     --     --                                        (36 moles of ethylene oxide)                                                   tributylphenol polyethylene glycol ether                                                                     12%     4%                                       (30 moles of ethylene oxide)                                                   cyclohexanone         --      15%    20%                                       xylene mixture        65%     25%    20%                                       ______________________________________                                    

Emulsions of any required concentration can be produced from such concentrates by dilution with water.

    ______________________________________                                         F2. Solutions      (a)    (b)     (c)   (d)                                    ______________________________________                                         a compound of tables 1 to 5                                                                       80%    10%     5%    95%                                    ethylene glycol monomethyl ether                                                                  20%    --      --    --                                     polyethylene glycol 400                                                                           --     70%     --    --                                     N--methyl-2-pyrrolidone                                                                           --     20%     --    --                                     epoxidised coconut oil                                                                            --     --      1%     5%                                    petroleum distillate (boiling range                                                               --     --      94%   --                                     160-190°)                                                               ______________________________________                                    

These solutions are suitable for application in the form of microdrops.

    ______________________________________                                         F3. Granulates       (a)     (b)                                               ______________________________________                                         a compound of tables 1 to 5                                                                         5%      10%                                               kaolin               94%     --                                                highly dispersed silicic acid                                                                       1%      --                                                attapulgite          --      90%                                               ______________________________________                                    

The active ingredient is dissolved in methylene chloride, the solution is sprayed onto the carrier, and the solvent is subsequently evaporated off in vacuo.

    ______________________________________                                         F4. Dusts            (a)     (b)                                               ______________________________________                                         a compound of tables 1 to 5                                                                         2%      5%                                                highly dispersed silicic acid                                                                       1%      5%                                                talcum               97%     --                                                kaolin               --      90%                                               ______________________________________                                    

Ready-for-use dusts are obtained by intimately mixing the carriers with the acitve ingredient.

Formulation examples for solid active ingredients of the formula I (throughout, percentages are by weight)

    ______________________________________                                         F5. Wettable powders                                                                               (a)      (b)    (c)                                        ______________________________________                                         a compound of tables 1 to 5                                                                        25%      50%    75%                                        sodium lignosulfonate                                                                              5%        5%    --                                         sodium lauryl sulfate                                                                              3%       --      5%                                        sodium diisobutylnaphthalenesulfonate                                                              --        6%    10%                                        octylphenol polyethylene glycol ether                                                              --        2%    --                                         (7-8 moles of ethylene oxide)                                                  highly dispersed silicic acid                                                                      5%       10%    10%                                        kaolin              62%      27%    --                                         ______________________________________                                    

The active ingredient is thoroughly mixed with the adjuvants and the mixtures is thoroughly ground in a suitable mill, affording wettable powders which can be diluted with water to give suspensions of the desired concentration.

    ______________________________________                                         F6. Emulsifiable concentrate                                                   ______________________________________                                         a compound of tables 1 to 5                                                                           10%                                                     octylphenol polyethylene glycol ether                                                                  3%                                                     (4-5 moles of ethylene oxide)                                                  calcium dodecylbenzenesulfonate                                                                        3%                                                     castor oil polyglycol ether                                                                            4%                                                     (36 moles of ethylene oxide)                                                   cyclohexanone          30%                                                     xylene mixture         50%                                                     ______________________________________                                    

Emulsions of any required concentration can be obtained from this concentrate by dilution with water.

    ______________________________________                                         F7. Dusts            (a)     (b)                                               ______________________________________                                         a compound of tables 1 to 5                                                                         5%       8%                                               talcum               95%     --                                                kaolin               --      92%                                               ______________________________________                                    

Ready-for-use dusts are obtained by mixing the active ingredient with the carriers, and grindiing the mixture in a suitable mill.

    ______________________________________                                         F8. Extruder granulate                                                         ______________________________________                                         a compound of tables 1 to 5                                                                         10%                                                       sodium lignosulfonate                                                                                2%                                                       carboxymethylcellulose                                                                               1%                                                       kaolin               87%                                                       ______________________________________                                    

The active ingredient is mixed and ground with the adjuvants, and the mixture is subsequently moistened with water. The mixture is extruded and then dried in a strem of air.

    ______________________________________                                         F9. Coated granulate                                                           ______________________________________                                         a compound of tables 1 to 5                                                                         3%                                                        polyethylene glycol 200                                                                             3%                                                        kaolin               94%                                                       ______________________________________                                    

The finely ground active ingredient is uniformly applied, in a mixer, to the kaolin moistend with polyethylene glycol. Non-dusty coated granulates are obtained in this manner.

    ______________________________________                                         F10. Suspension concentrate                                                    ______________________________________                                         a compound of tables 1 to 5                                                                          40%                                                      ethylene glycol       10%                                                      nonylphenol polyethylene glycol                                                                       6%                                                      (15 moles of ethylene oxide)                                                   sodium lignosulfonate 10%                                                      carboxymethylcellulose                                                                                1%                                                      37% aqueous formaldehyde solution                                                                    0.2%                                                     silicone oil in the form of a 75%                                                                    0.8%                                                     aqueous emulsion                                                               water                 32%                                                      ______________________________________                                    

The finely ground active ingredient is intimately mixed with the adjuvants, giving a suspension concentrated from which suspensions of any desired concentration can be obtained by dilution with water.

BIOLOGICAL EXAMPLES Example B1 Action against Puccinia graminis on wheat

(a) Residual-protective action

Wheat plants were treated 6 days after sowing with a spray mixture prepared from a wettable powder formulation of the active ingredient (0.02%). After 24 hours the treated plants were infected with a uredospore suspension of the fungus. The infected plants were incubated for 48 hours at 95-100% relative humidity and about 20° C. and then stood in a greenhouse at about 22° C. Evaluation of rust pustule development was made 12 days after infection.

(b) Systemic action

Wheat plants were treated 5 days after sowing with a spray mixture prepared from a wettable powder formulation of the active ingredient (0.006% based on the volume of the soil). After 48 hours the treated plants were infected with a uredospore suspension of the fungus. The plants were then incubated for 48 hours at 95-100% relative humidity and about 20° C. and then stood in a greenhouse at about 22° C. Evaluation or rust pustule development was made 12 days after infection.

Compounds of the tables were very effective against Puccinia fungi. Puccinia attack on untreated and infected control plants was 100%. Compounds 1.1 to 1.19, 1.22, 1.32, 1.44, 1.52, 1.54, 1.62, 1.63, 1.71, 1.75, 1.88, 1.114, 1.143, 1.144, 1.145, 2.2, 3.1, 3.13, 3.72, 3.116, 3.128, and other inhibited Puccinia attack to 0 to 5%.

Example B2 Action against Cercospora arachidicola in groundnut plants Residual protective action

Groundnut plants 10-15 cm in height were sprayed with a spray mixture (0.006%) prepared from a wettable powder formulation of the test compound, and infected 48 hours later with a conidia suspension of the fungus. The infected plants were incubated for 72 hours at about 21° C. and high humidity and then stood in a greenhouse until the typical leaf specks occur. Evaluation of the fungicidal action was made 12 days after infection and was based on the number and size of the specks.

Compared with untreated and infected controls (number and size of the specks=100%), Cersospora attack in groundnut plants treated with compounds of the tables was substantially reduced. In the above tests, compounds 1.1 to 1.19, 1.22, 1.32, 1.44, 1.52, 1.54, 1.62, 1.63, 1.71, 1.75, 1.88, 1.114, 1.143, 1.144, 1.145, 2.2, 3.1, 3.13, 3.72, 3.116 and 3.128 inhibited the occurrence of specks almost completely (0-10%).

Example B3 Action against Erysiphe graminis on barley

(a) Residual protective action

Barley plants about 8 cm in height were sprayed with a spray mixture (0.002%) prepared from the active ingredient formulated as a wettable powder. The treated plants were dusted with conidia of the fungus after 3-4 hours. The infected barley plants were then stood in a greenhouse at about 22° C. The extent of the infestation was evaluated after 10 days.

(b) Systemic action

Barley plants about 8 cm in height were treated with a spray mixture (0.006%), based on the colume of the soil) prepared from the test compound formulated as wettable powder. Care was taken that the spray mixture did not come in contact with the growing parts of the plants. The treated plants were infected 48 hours later with a conidia suspension of the fungus. The infected barley plants were then stood in a greenhouse at about 22° C. and evaluation of infestation was made after 10 days.

Compounds of formula I were very effective gainst Erysiphe fungi. Erysiphe attack was 100% on untreated and infected control plants. Individual compounds of the tables 1 and 2 inhibited fungus attack on barley to less than 30%.

Example B4 Residual-protective action against Venturia inaequalis on apple shoots

Apple cuttings with 10-20 cm long fresh shoots were sprayed with a spray mixture (0.006%) prepared from a wettable powder formulation of the test compound. The plants were infected 24 hours later with a conidia suspension of the fungus. The plants were then incubated for 5 days at 90-100% relative humidity and stood in a greenhouse for a further 10 days at 20°-20° C. Scab infestation was evaluated 15 days after infection. Compounds of the tables 1 and 2 inhibited attack to less than 25%. On the other hand, attack on untreated and infected control shoots was 100%.

Example B5 Action against Botrytis cinerea on beans Residual protective action

Bean plants about 10 cm in height were sprayed with a spray mixture (0.02% concentration) prepared from a wettable powder formulation of the test compund. After 48 hours, the treated plants were infected with a conidia suspension of the fungus. The infected plants were incubated for 3 days at 95-100% relative humidity and 21° C., and evaluation of fungus attack was then made. Numerous compounds of the tables were strongly inhibited the fungus infection. At a concentration of 0.02%, compounds 1.1, 1.2, 1.4, 1.6, 1.8, 1.11, 1.15 and 2.2 were fully effective (0 to 8% attack). Botrytis attack on untreated and infected bean plants was 100%.

Example B6 Action against Phytophthora infestans on tomato plants

(a) Residual protective action

After a cultivation period of 3 weeks, tomato plants were sprayed with a spray mixture (0.06%) prepared from a wettable powder formulation of the test compound. After 24 hours the treated plants were infected with a sporangia suspension of the fungus. Evaluation of fungus attack was made after the plants had been incubated for 5 days at 90-100% relative humidity and 20° C.

(b) Systemic action

A spray mixture (0.06%, based on the volume of the soil) prepared from a wettable powder formulation of the text compound was poured on tomato plants after a cultivation period of 3 weeks. Care was taken that the spray mixture did not come in contact with the growing parts of the plants. After 48 hours the plants were infected with a sporangia suspension of the fungus. Evaluation of fungus attack was made after the plants had been incubated for 5 days at 90-100% relative humidity and 20° C.

In the above tests, compounds 1.1, 1.2, 1.4, 1.6, 1.8 to 1.20, 1.22, 1.29, 1.44, 1.63, 1.75, 1.88, 1.143 to 1.145, 2.2, 3.1 and 3.116 and others had a very good systemic action. These compounds inhibited fungus attack almost completely (0 to 5% attack) as against 100% attack on untreated control plants.

Example B7 Action against Plasmopara viticola on vines

(a) Residual protective action

Vine cuttings in the 4-5 leaf stage were sprayed with a spray mixture (0.06%) prepared from a wettable powder formulation of the test compound. After 24 hours the treated plants were infected with a sporangia suspension of the fungus. Fungus attack was evaluated after incubation for 6 days at 95-100% relative humidity and 20° C.

(b) Residual curative action

Vine cuttings in the 4-5 leaf stage were infected with a sporangia suspension of the fungus. After incubation for 24 hours in a humid chamber at 95-100% relative humidity and 20° C., the infected plants were dried and sprayed with a spray mixture (0.06%) prepared from a wettable powder formulation of the test compound. After the spray coating had dried, the treated plants were returned to the humid chamber. Evaluation of fungus attack was made 6 days after infection.

Compounds of Tables 1 to 5 exhibited a very good fungicidal action against Plasmopara viticola on vines. For example, compounds 1.1, 1,4, 1.6, 1.8 and 1.11 inhibited fungus attack completely (0 to 5%).

Example B8 Action against Piricularia on rice plants Residual protective action

After a cultivation period of 2 weeks, rice plants were sprayed with a spray mixture (0.02%) prepared from a wettable powder formulation of the test compound. After 48 hours the treated plants were infected with a conidia suspension of the fungus. Evaluation of fungus attack was made after incubation for 5 days at 95-100% relative humidity and 24° C.

Compared with 100% attack on untreated controls, fungus attack was less than 10% on rice plants which had been treated with a spray mixture containing one of compounds 1.1, 1.4, 1.6, 1.8 and 2.2. 

What is claimed is:
 1. A compound of the formula ##STR13## wherein R₅ and R₇ are selected from the group consisting of chloro, chloromethyl, methyl, methoxy, trichloromethyl, methoxyethoxy, ethoxyethoxyethoxy, propargyloxy, 2,2,2-trifluoroethoxy, 2-pyridylthio and 4-chlorophenoxy, and R₆ is hydrogen, chlorine or bromine.
 2. The compound of claim 1 wherein, R₅, R₆ and R₇ are Cl.
 3. The compound of claim 1 wherein, R₅ is Cl, R₆ is Br and R₇ is OCH₃.
 4. The compound of claim 1 wherein R₅ is Cl, R₆ is H and R₇ is --CH₂ Cl.
 5. The compound of claim 1 wherein R₅ is Cl, R₆ is H and R₇ is --OCH₂ C.tbd.CH.
 6. A compound of claim 1, selected from the group consisting of:N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4,6-dichloropyrimidine (compound 1.1), N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4-chloro-6-trichloromethylpyrimidine (1.11), N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4,6-dimethylpyrimidine (1.15), N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4-trichloromethyl-6-(methoxyethoxy)pyrimidine (1.6), N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4-methoxy-6-(2-pyridylthio)pyrimidine (1.2), N-(3'-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4- trichloromethyl-6-(ethoxyethoxyethoxy)pyrimidine (1.4), and N-(3-chloro-2',6'-dinitro-4'-trifluoromethylphenyl)-2-amino-4-methoxy-6-(4"-chlorophenoxy)pyrimidine (1.8).
 7. The compound of the formula ##STR14## wherein R₅ is Cl, R₆ is H and R₇ is --S--CH₂ CH═CH₂.
 8. A composition for controlling preventing attack by phytopathogenic pests, which contains an effective amount of at least one compound of claim 1 together with a carrier.
 9. A method of controlling phytopathogenic pests or of preventing cultivated plants from being attacked by such pests, which comprises applying to said plants or to the locus thereof a pesticidally effective amount of a compound of claim
 1. 